Business Details
33 Years
experience
Emergency
services
Expert Roofing Services in Washington DC
CJ Roofing LLC has been a trusted family-owned and operated roofing contractor in Washington DC for over 30 years. Founded in 1993, our company specializes in flat roof repairs, slate roof repairs, roof coatings, and full roof replacements. We are proud to serve all neighborhoods across the District of Columbia, including Capitol Hill, Glover Park, and Georgetown. Our team is certified as Master Craftsmen by Certainteed and holds a DC License #420221000021. We prioritize transparency, offering free estimates and recommending repairs over replacements whenever possible. With two generations of experience and a commitment to community engagement, we are consistently ranked as the top roofing contractor in Capitol Hill and recognized for award-winning customer service. Our dedication to quality craftsmanship and ethical practices has earned us multiple awards, including HomeAdvisor's Elite Service Provider and Best of awards.
Services
Roof Repairs
Roof Replacement
Roof Coatings
Skylight Repairs
Gutter Replacement
Details
- Year established: 1993
Highlights and features
- We have 30 years of experience serving Washington DC neighborhoods.
- Our team is certified as Master Craftsmen by Certainteed.
- We offer 24/7 emergency roofing services for urgent needs.
- We specialize in historic home roof repairs across Capitol Hill.
- We provide transparent cost breakdowns with no hidden fees.
Associations and certifications
- Certainteed Master Craftsmen
What people say
Award-winning service
Honest assessments
Prompt emergency response
Quality craftsmanship
Professional team
Services
Full or Partial Roof Replacement
We offer a wide variety of roof replacements, on all size roofs and in all neighborhoods of the District. If you arent sure what kind you have, thats ok, we come out and inspect every roof before giving you a written estimate. If you need a new roof or a re-roof we are the company to call.
Roof Repairs and Tune-ups
There are many reasons why your roof may need repaired, an obvious sign is a water leak inside your home, but often repairs are needed long before a leak is detected. Its a good idea to have a qualified roofing contractor inspect your roof so you can have a baseline on your roofs condition before a big storm hits, and so you can address issues while theyre still minor and inexpensive. A repair that costs a couple hundred dollars today can easily cost a few thousand down the road if left unfixed.
Roof Coatings and Sealants
Along with repairs, we offer a wide variety of roof sealants and roof coatings to extend the life of your roof. Depending on the kind of roof material, your roof pitch, any ponding water, and several other factors, we will try to offer you a couple options for roof coatings.
People
Charles Johnston
Owner
Second-generation roofer with over 30 years of DC roofing experience, specializing in historic home repairs and community engagement.
William Johnston
Co-Owner
Certified APOC contractor with expertise in flat roof systems, bringing 25 years of technical knowledge to complex roofing projects.
Questions
What are the signs I need a roof replacement?
Check for leaks, missing shingles, granule loss, sagging roof decks, or interior water damage. Visit our blog for the 8 signs infographic.
Do you offer free estimates?
Yes, we provide written estimates with no obligation, including detailed cost breakdowns and material options.
Are you licensed for DC roof work?
We hold DC Contractor License #420221000021 and Certainteed Master Craftsmen certification.
What roof coatings do you recommend?
We offer silicone, acrylic, and aluminum-based coatings that improve energy efficiency and extend roof life by 10-15 years.
How quickly can you handle emergency repairs?
Our 24/7 emergency service responds within 2 hours for urgent roof issues across DC.
Do you service historic buildings?
Yes, we specialize in preserving historic homes in Capitol Hill and Georgetown with period-appropriate materials.
Reviews (12)
Mark F.
Apr 22, 2021
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Charlie came out and gave my roof a thorough inspection, while the other two companies didn?t even go up on the roof. After checking it out and showing me pictures, we agreed on a price and he fixed it the same day. Thank you
Joan D.
Feb 28, 2021
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They showed up on time, took lots of pictures per my request, and fixed my roof with Same day service. Very good experience with them and thank you to home advisor for putting us together
Joan J.
Nov 25, 2020
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They were gentlemen. They worked very hard. Due to heavy winds, their ladder fell over damaging plastic flower pots. Not only did they replace them they also filled the pots with soil. I highly recommend this company.
Jason C.
Nov 18, 2020
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On time. Good value for the work. Performed an emergency repair on my roof with same day service. Thank you so much
Linda R.
Sep 05, 2020
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Charlie was very knowledgeable about Roofing. He arrived on time, he explained in detail the defaults of my flat roof, took pictures and described in further detail what he could do to repair those defaults. Charlie was a pleasure to work with. I felt very comfortable with him for there was no pressure more was there a sales pitch. He is reasonable and I recommend him highly.
Andrew M.
Aug 11, 2020
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Some other roofers I talked to seemed focused on selling me on something without even seeing my roof. WJ was not like that. They took the time to see what actually needed to be done.
Preston W.
Aug 07, 2020
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Excellent response time and the repair was completed the same day that the assessment was done. Very thankful given the heavy rains that came afterwards.
Benjamin L.
Jul 17, 2020
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I had a few slate tiles that had slid out and broken when they hit the ground. Charlie and William measured them, went, and found new slates that matched the color pretty close considering the roof is 60 years old. And then put them in, they also sealed the pipe and chimney.
Clint S.
Jul 16, 2020
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I have had a persistent issue with standing water on my flat roof, and until now I haven t been able to get a contractor to give me some really good options on how to deal with it. Charlie came out and evaluated the problem and told me about a liquid application that would be perfect for my situation. I couldn t be more pleased with his professionalism and his patience with all my questions. He gave me a price in writing before his crew started and then he said they ran into a couple unexpected hiccups and I was afraid that meant even more money into this money pit, but he assured me that he was only telling me to keep me informed and that the price he gave me wasn t changing. When it came time to pay, I gave exactly what he quoted. I highly recommend this company.
Philip G.
Jul 16, 2020
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Charlie came out to look at our roof because of leaking. He gave us a couple of different options to deal with it, and we decided to go with the complete removal and replacement. So that we would not have to deal with it for the next 15-20 years.
Patricia L.
Jul 10, 2020
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Charlie was prompt in responding to all queries from me. Offered a competitive bid for the project and completed the work efficiently, I would happily use him again,
Matthew S.
Jul 03, 2020
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Prompt response, free estimate the next day, always on time, scheduled the work for within 36 hours of agreeing to scope of work and the cost.